18 Mar
2012
18 Mar
'12
4:15 a.m.
On 03/18/2012 12:09 AM, Eric Smith wrote:
On 03/17/2012 08:31 PM, Dave McGuire wrote:
Could be...still the same chip, at least to the level that I used it.
(SDLC) I use the two interchangeably; I tend to put them in SBC designs.
AMD's isn't more recent or more
"friendly"; it's a second source of
the same chip.
Are you sure? AMD was definitely a second-source for the original NMOS
part, but I thought AMD designed the Am85C30 as a CMOS replacemen, and
licensed the CMOS version back to Zilog. I could be wrong. Both AMD and Zilog made various enhanced versions of
the part that did
add new features, which may or may not make it more friendly depending
on your POV. I'm not certain that the enhanced parts from AMD and ZIlog,
even if they bear the same part number, are actually completely
compatible; I think the development diverged. One example is the 85230.
I don't remember the others at the moment. I had to study all this at a
job in the late 1990s.
Well, like I said, I use 'em interchangeably in my boards. They're
compatible enough to that level. The 85230 is a bit different though.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA